diff options
| -rw-r--r-- | bash.html.markdown | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/bash.html.markdown b/bash.html.markdown index 160fe8f2..9b199b8c 100644 --- a/bash.html.markdown +++ b/bash.html.markdown @@ -200,8 +200,12 @@ sort file.txt uniq -d file.txt # prints only the first column before the ',' character cut -d ',' -f 1 file.txt -# replaces every occurrence of 'apples' with 'oranges' in file.txt -sed -i 's/apples/oranges/g' file.txt -# prints the number of lines containing the string "foo" in file.txt -grep -c "foo" file.txt +# replaces every occurrence of 'okay' with 'great' in file.txt, (regex compatible) +sed -i 's/okay/great/g' file.txt +# print to stdout all lines of file.txt which match some regex, the example prints lines which beginning with "foo" and end in "bar" +grep "^foo.*bar$" file.txt +# pass the option "-c" to instead print the number of lines matching the regex +grep -c "^foo.*bar$" file.txt +# if you literally want to search for the string, and not the regex, use fgrep (or grep -F) +fgrep "^foo.*bar$" file.txt ``` |